[PATCH] qlcnic: Simplify DMA setting
From: Christophe JAILLET
Date: Sat Jan 08 2022 - 08:49:11 EST
As stated in [1], dma_set_mask() with a 64-bit mask will never fail if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
So qlcnic_set_dma_mask(), (in qlcnic_main.c) can be simplified a lot and
inlined directly in its only caller.
If dma_set_mask_and_coherent() succeeds, 'pci_using_dac' is known to be 1.
So it can be removed from all the calling chain.
qlcnic_setup_netdev() can finally be simplified as-well.
[1]: https://lkml.org/lkml/2021/6/7/398
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 2 +-
.../ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h | 2 +-
.../ethernet/qlogic/qlcnic/qlcnic_83xx_init.c | 4 +-
.../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 38 +++++--------------
.../net/ethernet/qlogic/qlcnic/qlcnic_sriov.h | 2 +-
.../qlogic/qlcnic/qlcnic_sriov_common.c | 9 ++---
6 files changed, 19 insertions(+), 38 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index be7abee160e7..b25102fded7b 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -1698,7 +1698,7 @@ int qlcnic_set_vxlan_port(struct qlcnic_adapter *adapter, u16 port);
int qlcnic_set_vxlan_parsing(struct qlcnic_adapter *adapter, u16 port);
int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter);
int qlcnic_read_mac_addr(struct qlcnic_adapter *);
-int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *, int);
+int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *);
void qlcnic_set_netdev_features(struct qlcnic_adapter *,
struct qlcnic_esw_func_cfg *);
void qlcnic_sriov_vf_set_multi(struct net_device *);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
index 6f1d9c1fd1b0..23cd47d588e5 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h
@@ -609,7 +609,7 @@ int qlcnic_83xx_read_flash_descriptor_table(struct qlcnic_adapter *);
int qlcnic_83xx_flash_read32(struct qlcnic_adapter *, u32, u8 *, int);
int qlcnic_83xx_lockless_flash_read32(struct qlcnic_adapter *,
u32, u8 *, int);
-int qlcnic_83xx_init(struct qlcnic_adapter *, int);
+int qlcnic_83xx_init(struct qlcnic_adapter *);
int qlcnic_83xx_idc_ready_state_entry(struct qlcnic_adapter *);
void qlcnic_83xx_idc_poll_dev_state(struct work_struct *);
void qlcnic_83xx_idc_exit(struct qlcnic_adapter *);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
index 27dffa299ca6..dbb800769cb6 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
@@ -2432,7 +2432,7 @@ static void qlcnic_83xx_init_rings(struct qlcnic_adapter *adapter)
qlcnic_set_sds_ring_count(adapter, rx_cnt);
}
-int qlcnic_83xx_init(struct qlcnic_adapter *adapter, int pci_using_dac)
+int qlcnic_83xx_init(struct qlcnic_adapter *adapter)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
int err = 0;
@@ -2466,7 +2466,7 @@ int qlcnic_83xx_init(struct qlcnic_adapter *adapter, int pci_using_dac)
goto exit;
if (qlcnic_sriov_vf_check(adapter)) {
- err = qlcnic_sriov_vf_init(adapter, pci_using_dac);
+ err = qlcnic_sriov_vf_init(adapter);
if (err)
goto detach_mbx;
else
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index ed84f0f97623..d320567b2cca 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -2258,8 +2258,7 @@ static int qlcnic_set_real_num_queues(struct qlcnic_adapter *adapter,
}
int
-qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev,
- int pci_using_dac)
+qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev)
{
int err;
struct pci_dev *pdev = adapter->pdev;
@@ -2278,20 +2277,15 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev,
netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_IPV6_CSUM | NETIF_F_GRO |
- NETIF_F_HW_VLAN_CTAG_RX);
+ NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA);
netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
- NETIF_F_IPV6_CSUM);
+ NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA);
if (QLCNIC_IS_TSO_CAPABLE(adapter)) {
netdev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
netdev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO6);
}
- if (pci_using_dac) {
- netdev->features |= NETIF_F_HIGHDMA;
- netdev->vlan_features |= NETIF_F_HIGHDMA;
- }
-
if (qlcnic_vlan_tx_check(adapter))
netdev->features |= (NETIF_F_HW_VLAN_CTAG_TX);
@@ -2341,20 +2335,6 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev,
return 0;
}
-static int qlcnic_set_dma_mask(struct pci_dev *pdev, int *pci_using_dac)
-{
- if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
- *pci_using_dac = 1;
- else if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
- *pci_using_dac = 0;
- else {
- dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
- return -EIO;
- }
-
- return 0;
-}
-
void qlcnic_free_tx_rings(struct qlcnic_adapter *adapter)
{
int ring;
@@ -2441,8 +2421,8 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct net_device *netdev = NULL;
struct qlcnic_adapter *adapter = NULL;
struct qlcnic_hardware_context *ahw;
- int err, pci_using_dac = -1;
char board_name[QLCNIC_MAX_BOARD_NAME_LEN + 19]; /* MAC + ": " + name */
+ int err;
err = pci_enable_device(pdev);
if (err)
@@ -2453,9 +2433,11 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out_disable_pdev;
}
- err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
- if (err)
+ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+ if (err) {
+ dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
goto err_out_disable_pdev;
+ }
err = pci_request_regions(pdev, qlcnic_driver_name);
if (err)
@@ -2569,7 +2551,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
} else if (qlcnic_83xx_check(adapter)) {
qlcnic_83xx_check_vf(adapter, ent);
adapter->portnum = adapter->ahw->pci_func;
- err = qlcnic_83xx_init(adapter, pci_using_dac);
+ err = qlcnic_83xx_init(adapter);
if (err) {
switch (err) {
case -ENOTRECOVERABLE:
@@ -2633,7 +2615,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (adapter->portnum == 0)
qlcnic_set_drv_version(adapter);
- err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
+ err = qlcnic_setup_netdev(adapter, netdev);
if (err)
goto err_out_disable_mbx_intr;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h
index d0111cb3b40e..c42b99cd58bd 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h
@@ -188,7 +188,7 @@ int qlcnic_sriov_init(struct qlcnic_adapter *, int);
void qlcnic_sriov_cleanup(struct qlcnic_adapter *);
void __qlcnic_sriov_cleanup(struct qlcnic_adapter *);
void qlcnic_sriov_vf_register_map(struct qlcnic_hardware_context *);
-int qlcnic_sriov_vf_init(struct qlcnic_adapter *, int);
+int qlcnic_sriov_vf_init(struct qlcnic_adapter *);
void qlcnic_sriov_vf_set_ops(struct qlcnic_adapter *);
int qlcnic_sriov_func_to_index(struct qlcnic_adapter *, u8);
void qlcnic_sriov_handle_bc_event(struct qlcnic_adapter *, u32);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
index 42a44c97572a..9282321c2e7f 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
@@ -525,8 +525,7 @@ static int qlcnic_sriov_vf_init_driver(struct qlcnic_adapter *adapter)
return 0;
}
-static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
- int pci_using_dac)
+static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter)
{
int err;
@@ -571,7 +570,7 @@ static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
if (err)
goto err_out_send_channel_term;
- err = qlcnic_setup_netdev(adapter, adapter->netdev, pci_using_dac);
+ err = qlcnic_setup_netdev(adapter, adapter->netdev);
if (err)
goto err_out_send_channel_term;
@@ -614,7 +613,7 @@ static int qlcnic_sriov_check_dev_ready(struct qlcnic_adapter *adapter)
return 0;
}
-int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac)
+int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
int err;
@@ -631,7 +630,7 @@ int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac)
if (err)
return err;
- err = qlcnic_sriov_setup_vf(adapter, pci_using_dac);
+ err = qlcnic_sriov_setup_vf(adapter);
if (err)
return err;
--
2.32.0